Dust-van.



PATENTED NOV. 1'7, 1903.

P. STRASSBR. l

DUST VAN.

APPLICATION FILED MAB.. 17. 1903.

N0 MODEL.

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UNITED STATES Patented November 1'?, 1903.

'PATENT OFFICE.

DUST-VAN.

SPECIFICATION forming part of Letters Patent No. 744,127, dated November 17, 19023;.z

Application nea March I7, 1903.;

To all whom t may concern:

Be it known that l, FRIEDRICH SrRAssnR, engineer, a citizen of the Republic of Switzerland, and a resident of Zurich, Switzerland, have invented new and useful Improvements in Dust-Vans, of which the following is a speciiication.

This invention relates to that class of dustvans in connection with which dust-bins of uniform size and particular construction are used. The construction of this class of dustvans, or more precisely of the coverplate of the same, is improved according to the present invention in such a manner that the van is tightly closed when the dust-bins are emptied into the van.

In the accompanying drawings, Figure l shows a ground plan of thevcover-plate of the van. Fig. 2 represents part of the lower surface of the cover-plate.V Fig. 3 shows in vertical section how the movable frame below the cover-plate is suspended. Figa shows in side View, partly in section, a dust-bin placed on the van to be emptied. Fig. 5 is a side view of a dust-bin used in connection with the improved dust-van.

The van proper may be constructed in any suitable manner. It is closed by a fixed coverplate B, in which a certain number of square openings a are provided. Along the edges of the openings a frames c, of angleiromare fixed, to which lids b, Fig. 4, are hinged. The coverplate a is strengthened by transverse rails tof T-iron. On the lower surface of the coverplate a. angle-irons n are secured at both sides of the openings a, to which two or more brackets p are bolted, in the lower upwardlybent ends of which rollers r are rotatably mounted. These rollers 'r serve for supporting the movable fra-mes, of which one'is provided for each row of openings a. able frames A are composed of longitudinal angle-irons and transverse bars Z. On thelongitudinal angle-irons plates k, of sheet-iron, arefIXed, so that in one position of the movable frame the openings a in the cover-plate are closed by said plates k, while in the other extreme position of the frame the openings a are free.

The frames A can be moved to and fro by means of racks and toothed wheelsf, adapted to be rotated from outside the vans by means The movn Serial No. 148,238. (No model.)

y of cranks g.' At the left-hand side of each of the plates k a transverse bar Z is iixed in such a manner that a small slot fm, is left between the transverse bar l and the edge of plate k.

The dust-bins fu, Figs. 4 and 5, correspond in cross-section to the openings a, and being 'a little smaller than these openings they canbe easily inserted into the same. The dustbins o are closed by covers so, which are guided in suitable grooves in the walls of said bins. One end of the'lids x is bent, so as to form an upwardly-projecting iiap e..

Somewhat below the upper edge a shoulder w is rprovided on the dust-bin o. The bottom y of the dust-bins o is movably connected with the side walls by a strip of india-rubber, strong canvas, or similar material. At the outer surface of the bottom y a suitable handle is arranged.

The device is used as follows: Vhen the dust-van is out of operation, the frames A are in such a position that the plates 1f; close the openings a from below, which openings are closed from above by the lids b. lf now a dust-bin is to be emptied, the lid b of one of the openings a is lifted, and the dust-bin U- is inserted into the openinga upside down, so that the apz of the cover of the dust-bin enters the slot m at the left-hand side of the respective plate Zt. dust-bin o rests on the upper end of the angle-iron frame c. There can be placed as many dust-bins on the dust-vans as there are openings a. If now the crank g of one of the movable frames A is rotated, this frame Ais moved to the left, so that the openings a. are left free by the plates k. Simultaneously the covers tof the dust-bins o are drawn out, so that the contents of the dust-bins can fall yinto the van. To insure a thorough empty- 'ing of the bins, the movable bottoms may be pressed down. The dust-bins cannot be removed before the frame A has returned to its original position-that is to say, before the openings o'. are closed again by the plates 7c, so that when the dust-bins are removed no dust or bad smell rises from the: interior of the van.

Having fully described my invention, what I claim, and desire to secure by Letters Patent, is-

lmproved dust-vans, comprising in combi- The shoulder w of the'v l nation with a suitably-constru cted van proper,

a ixed cover-plate, square openings in said cover-plate, frames of angle-iron on the edges of said openings, lids linked to one side of said frames, brackets on the lower surface of the cover-plate {iXed at both sides of the openings a, rollers mounted in said brackets, movable frames, one for each row of openings, supported by said rollers, plates of sheetiron Xed on said movable frame so as to close the openings in the cover-plate when the frame is in its lookin g positon,transverse bars at the left-hand side of said plates, a slot between each of said transverse bars and Xed plates, dust-bins of slightly-smaller dimensions than the openings of the cover-plate, a lid at the upper end of said dust-bin sliding FRIEDRICH STRASSER.

Witnesses:

A. LIEBERKNECHT, TH. EDEL. 

